Sunday, March 13, 2016

STANDARD OPERATING PROCEDURES FOR RETICULOCYTE COUNT


1. SPECIMEN:

  1. EDTA anticoagulated Blood

2. REAGENTS

2.1 New Methylene Blue Staining solution


3. PROCEDURE:

  1. Put 2 drops of new methylene blue in the bottom of a 12x75mm tube. Using a pipette, add 2 drops of well-mixed EDTA blood to the tube.
  2. Mix blood/stain mixture. The mixture color should be smoky-gray. Adjust if needed, i.e., add more blood if mixture is too blue.
  3. Incubate mixture at least 5 minutes but no longer than 10 minutes.
  4. MIX solution again. Prepare 2-4 good smears, label and let dry.
  5. Using oil/100x power, count 1000 total red cells separating mature RBC's from retics.
(Note - Retics are greenish with blue precipitates of RNA. Two “dots” or more is a retic. Go
from feather edge to body of smear, making sure you are not counting too thick.)
  1. Count the number of retics in % as per below:

retics % = # retics x 100
1000 RBCs
  1. Prepare lab report of the observations.











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